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Kamd
Cheater
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Joined: 02 May 2018
Posts: 28
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 Posted: Fri Nov 16, 2018 7:32 pm Post subject: How to properly scan for strings in memory? |
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I have been trying to scan and replace strings in memory with Lua.
Just as an example, I want to scan for all strings "hey" and replace them with "bye"
I have tried using the following code, but I noticed that it does not actually return ALL the strings. I have found this out when I scan for "hey" in CE, then run my Lua script, but some results found in CE never get replaced (maybe only 70% of results do)
Probably because I am doing something wrong with parameters, I don't understand most.
Code:
| Code: |
function scanStr()
ms=createMemScan()
ms.firstScan(soExactValue,vtString,"hey","hey",0, 0xffffffffffffffff, "", fsmNotAligned, "1", false, false, false, false)
ms.onScanDone = function(ms)
f=createFoundList(ms);
f.initialize();
-- .. etc ..
end
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As an alternative, I have converted the string to hex byte and use AOB scan, which has always worked correctly, but I notice that it is slower than using regular string scan.
I believe these are the default string scan options I need: (attached)
| Description: |
| settings of CE string scan |
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| Filesize: |
15.97 KB |
| Viewed: |
2861 Time(s) |
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ParkourPenguin
I post too much
 Reputation: 152
Joined: 06 Jul 2014
Posts: 4711
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| Posted: Fri Nov 16, 2018 10:16 pm Post subject: |
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celua.txt:
| Quote: | | firstScan(scanoption, vartype, roundingtype, input1, input2 ,startAddress ,stopAddress ,protectionflags ,alignmenttype ,"alignmentparam" ,isHexadecimalInput ,isNotABinaryString, isunicodescan, iscasesensitive); |
Your code ignores the rounding type parameter which throws all the other parameters off. It's not relevant for a string scan, so just pass rtRounded.
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I don't know where I'm going, but I'll figure it out when I get there. |
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